A GCC Time Delay Estimation Algorithm Based on Wavelet Transform

This paper introduces a new time delay estimation(TDE) algorithm, which applies the discrete wavelet transform and generalized cross-correlation(GCC). This algorithm first handles separately the signals received by the two microphones with wavelet transform, then under each scale, applying separately GCC to estimate the time delay in the wavelet threshold. At last, getting the final result by transforming the estimated time delay to the time field. In order to testify the stability and feasibility of the new algorithm, this paper illustrates the simulation result under different circumstances (including different signal to noise ratio and different reverberation circumstances).